AudioManager IsMusicActive always return true for Monogame 3.3

I am porting my game from Windows Phone to Android and using Monogame With Xamarin.Android. I was using 3.2 earlier but after an upgrade to I noticed the following always return true.

    AudioManager audioMan = (AudioManager) this.GetSystemService(Context.AudioService);
    return audioMan.IsMusicActive;    

Is this a bug? What am I missing?